Workshop manual says let car idle, make sure fan is on?, remove vacuum hose and plug manifold.
When I remove hose and plug manifold revs drop by about 300. This normal or due to the Bailey breather
set up. Still find it strange I can take the oil filler cap off and the car still runs.
Cars going ok but not spot on. Bought a timing gun only to make sure it's safe to travel for a
set up, Hopefully by Sitech.